mirror of https://github.com/Siphonay/mastodon
47f0d7021e
* refactor(statuses_vacuum): remove dead code - unused
Method is not called inside class and private.
Clean up dead code.
* refactor(statuses_vacuum): make retention_period present test explicit
This private method only hides functionality.
It is best practice to be as explicit as possible.
* refactor(statuses_vacuum): improve query performance
- fix statuses_scope having sub-select for Account.remote scope by
`joins(:account).merge(Account.remote)`
- fix statuses_scope unnecessary use of `Status.arel_table[:id].lt`
because it is inexplicit, bad practice and even slower than normal
`.where('statuses.id < ?'`
- fix statuses_scope remove select(:id, :visibility) for having reusable
active record query batches (no re queries)
- fix vacuum_statuses! to use in_batches instead of find_in_batches,
because in_batches delivers a full blown active record query result,
in stead of an array - no requeries necessary
- send(:unlink_from_conversations) not to perform another db query, but
reuse the in_batches result instead.
- remove now obsolete remove_from_account_conversations method
- remove_from_search_index uses array of ids, instead of mapping
the ids from an array - this should be more efficient
- use the in_batches scope to call delete_all, instead of running
another db query for this - because it is again more efficient
- add TODO comment for calling models private method with send
* refactor(status): simplify unlink_from_conversations
- add `has_many through:` relation mentioned_accounts
- use model scope local instead of method call `Status#local?`
- more readable add account to inbox_owners when account.local?
* refactor(status): searchable_by way less sub selects
These queries all included a sub-select. Doing the same with a joins
should be more efficient.
Since this method does 5 such queries, this should be significant,
since it technically halves the query count.
This is how it was:
```ruby
[3] pry(main)> Status.first.mentions.where(account: Account.local, silent: false).explain
Status Load (1.6ms) SELECT "statuses".* FROM "statuses" WHERE "statuses"."deleted_at" IS NULL ORDER BY "statuses"."id" DESC LIMIT $1 [["LIMIT", 1]]
Mention Load (1.5ms) SELECT "mentions".* FROM "mentions" WHERE "mentions"."status_id" = $1 AND "mentions"."account_id" IN (SELECT "accounts"."id" FROM "accounts" WHERE "accounts"."domain" IS NULL) AND "mentions"."silent" = $2 [["status_id", 109382923142288414], ["silent", false]]
=> EXPLAIN for: SELECT "mentions".* FROM "mentions" WHERE "mentions"."status_id" = $1 AND "mentions"."account_id" IN (SELECT "accounts"."id" FROM "accounts" WHERE "accounts"."domain" IS NULL) AND "mentions"."silent" = $2 [["status_id", 109382923142288414], ["silent", false]]
QUERY PLAN
------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.15..23.08 rows=1 width=41)
-> Seq Scan on accounts (cost=0.00..10.90 rows=1 width=8)
Filter: (domain IS NULL)
-> Index Scan using index_mentions_on_account_id_and_status_id on mentions (cost=0.15..8.17 rows=1 width=41)
Index Cond: ((account_id = accounts.id) AND (status_id = '109382923142288414'::bigint))
Filter: (NOT silent)
(6 rows)
```
This is how it is with this change:
```ruby
[4] pry(main)> Status.first.mentions.joins(:account).merge(Account.local).active.explain
Status Load (1.7ms) SELECT "statuses".* FROM "statuses" WHERE "statuses"."deleted_at" IS NULL ORDER BY "statuses"."id" DESC LIMIT $1 [["LIMIT", 1]]
Mention Load (0.7ms) SELECT "mentions".* FROM "mentions" INNER JOIN "accounts" ON "accounts"."id" = "mentions"."account_id" WHERE "mentions"."status_id" = $1 AND "accounts"."domain" IS NULL AND "mentions"."silent" = $2 [["status_id", 109382923142288414], ["silent", false]]
=> EXPLAIN for: SELECT "mentions".* FROM "mentions" INNER JOIN "accounts" ON "accounts"."id" = "mentions"."account_id" WHERE "mentions"."status_id" = $1 AND "accounts"."domain" IS NULL AND "mentions"."silent" = $2 [["status_id", 109382923142288414], ["silent", false]]
QUERY PLAN
------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.15..23.08 rows=1 width=41)
-> Seq Scan on accounts (cost=0.00..10.90 rows=1 width=8)
Filter: (domain IS NULL)
-> Index Scan using index_mentions_on_account_id_and_status_id on mentions (cost=0.15..8.17 rows=1 width=41)
Index Cond: ((account_id = accounts.id) AND (status_id = '109382923142288414'::bigint))
Filter: (NOT silent)
(6 rows)
```
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|---|---|---|
| .. | ||
| activitypub | ||
| admin | ||
| connection_pool | ||
| importer | ||
| nodeinfo | ||
| ostatus | ||
| rss | ||
| settings | ||
| translation_service | ||
| vacuum | ||
| access_token_extension.rb | ||
| account_reach_finder.rb | ||
| activity_tracker.rb | ||
| application_extension.rb | ||
| ascii_folding.rb | ||
| cache_buster.rb | ||
| delivery_failure_tracker.rb | ||
| emoji_formatter.rb | ||
| entity_cache.rb | ||
| extractor.rb | ||
| fast_geometry_parser.rb | ||
| fast_ip_map.rb | ||
| feed_manager.rb | ||
| hash_object.rb | ||
| hashtag_normalizer.rb | ||
| html_aware_formatter.rb | ||
| inline_renderer.rb | ||
| link_details_extractor.rb | ||
| permalink_redirector.rb | ||
| plain_text_formatter.rb | ||
| potential_friendship_tracker.rb | ||
| rate_limiter.rb | ||
| redis_configuration.rb | ||
| request.rb | ||
| request_pool.rb | ||
| response_with_limit.rb | ||
| scope_parser.rb | ||
| scope_transformer.rb | ||
| search_query_parser.rb | ||
| search_query_transformer.rb | ||
| status_cache_hydrator.rb | ||
| status_filter.rb | ||
| status_finder.rb | ||
| status_reach_finder.rb | ||
| suspicious_sign_in_detector.rb | ||
| tag_manager.rb | ||
| text_formatter.rb | ||
| themes.rb | ||
| toc_generator.rb | ||
| translation_service.rb | ||
| user_settings_decorator.rb | ||
| vacuum.rb | ||
| validation_error_formatter.rb | ||
| video_metadata_extractor.rb | ||
| webfinger.rb | ||
| webfinger_resource.rb | ||